The Pope will visit during a weekend and he will visit the tomb of Cardinal Stepanic, the Archbishop of Zagreb. He was sentenced to 16 years in prison by a communist court.
Also during the visit, Benedict will attend a large meeting with Croatian families.
This will be the first time that Benedict XVI travels to Croatia, a country which aspires to join the European Union in 2012. John Paul II visited on three separate occasions.
Croatia is a Catholic stronghold in the Balkans where 8 out of ten people are Catholic.